抗铁磁稀土领域在多铁基Dy0.7Tb0.3FeO3中的分布
Yannik Zemp1, Ehsan Hassanpour2,3, Jan Gerrit Horstmann1,4
1Department of Materials, ETH Zurich, Zurich, Switzerland.
概括
稀土和过渡金属等级在多铁中共存. 这项研究揭示了Dy$_{0.7}$Tb$_{0.3}$FeO$_{3}$中的稀土域,显示了它们在多铁域模式中的关键作用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 磁力学 磁力学 是一种
背景情况:
- 多铁性材料表现出共存的磁性和电性秩序.
- 了解稀土和过渡金属等级之间的相互作用是多铁性质的关键.
- 访问稀土磁域是具有挑战性的,但对分析至关重要.
研究的目的:
- 为了揭示稀土领域的模式在多铁的Dy$_{0.7}$Tb$_{0.3}$FeO$_{3}$.
- 研究稀土和铁电领域之间的空间相关性.
- 阐明稀土秩序在塑造多铁域结构中的作用.
主要方法:
- 使用光学第二波生成 (SHG) 来可视化域结构.
- 进行了域模式及其空间相关性的分析.
- 该研究描述了反铁磁稀土秩序和铁电极化之间的相互作用.
主要成果:
- 在Dy$_{0.7}$Tb$_{0.3}$FeO$_{3}$中观察到柱状Dy/Tb域.
- 这些稀土柱对准垂直于磁诱导的电极化.
- 稀土顺序诱导铁电顺序中的带电域壁,然后通过铁电能量最小化来减少.
结论:
- 稀土和铁电序列之间的相互作用决定了Dy$_{0.7}$Tb$_{0.3}$FeO$_{3}$中的多铁域模式.
- 稀土序列在建立观察到的域结构方面发挥着重要作用.
- Dy$_{0.7}$Tb$_{0.3}$FeO$_{3}$说明了稀土多铁元素中的不同场景.
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